Monday, January 9, 2012

How to STOP and START processes in Oracle RAC and Log Directory Structure

You need to follow the below steps to Stop and Start processes in Oracle RAC

Shutdown RAC DatabaseYou need to Shutdown Database instances on each node. You can either use Oracle Enterprise Manager or SVRCTL to shutdown the instances. If you are using EM Grid control then set a blackout in Grid control for processes that you intend to shutdown. So that records for these processes indicate that the shutdown was planned.Use below command to stop Enterprise Manager/Grid Control$ORACLE_HOME/bin/emctl stop dbconsole

If you come across any issues during startup orshutdown, check the Oracle Clusterware Component Log Files.

Oracle Clusterware Log Directory Structure

CRS_HOME/log/hostname/crsd/ - The log files for the CRS daemon CRS_HOME/log/hostname/cssd/ - The log files for the CSS daemon CRS_HOME/log/hostname/evmd/ - The log files for the EVM daemonCRS_HOME/log/hostname/client/ - The log files for the Oracle Cluster Registry (OCR) CRS_HOME/log/hostname/racg/ - The log files for the Oracle RAC high availability componentCRS_HOME/log/hostname/racg/ - The log files for the Oracle RAC high availability componentCRS_HOME/log/hostanme/alert.log – The alert.log for Clusterware issues.

Please note that the CRS_HOME is the directory in which the Oracle Clusterware software was installed and hostname is the name of the node

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About Me

I have been working with Database technologies for over 16 years, specialized in High Availability Solutions such as Oracle RAC, Data Guard, Grid Control, SQLServer Cluster, SAPHANA. I have experience on wide range of products such as MySQL, Oracle Essbase, Agile, SAP Basis, SharePoint, Linux and Business Apps admin. I have implemented many business critical systems for fortune 500, 1000 companies.